我的对话框片段布局中有自定义视图PasscodeView。
PasscodeView.java：
public class PasscodeView extends ViewGroup {
EditText mEditText;
int mDigitCount;
private int mDigitWidth;
private int mDigitRadius;
private int mOuterStrokeWidth;
private int mInnerStrokeWidth;
private int mDigitInnerRadius;
private int mDigitSpacing;
private int mDigitElevation;
private int mControlColor;
private int mHighlightedColor;
private int mInnerColor;
private int mInnerBorderColor;
private OnFocusChangeListener mOnFocusChangeListener;
private PasscodeEntryListener mPasscodeEntryListener;
public PasscodeView(Context context) {
this(context, null);
}
public PasscodeView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public PasscodeView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
// Get style information
TypedArray array = getContext().obtainStyledAttributes(attrs, R.styleable.PasscodeView);
mDigitCount = array.getInt(R.styleable.PasscodeView_numDigits, 4);
// Dimensions
DisplayMetrics metrics = getResources().getDisplayMetrics();
mDigitRadius = array.getDimensionPixelSize(R.styleable.PasscodeView_digitRadius,
(int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 16, metrics));
mOuterStrokeWidth = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 2, metrics);
mInnerStrokeWidth = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 1, metrics);
mDigitInnerRadius = mDigitRadius - ((int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 6, metrics));
mDigitWidth = (mDigitRadius + mOuterStrokeWidth) * 2;
mDigitSpacing = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 16, metrics);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
mDigitElevation = array.getDimensionPixelSize(R.styleable.PasscodeView_digitElevation, 0);
}
// Get theme to resolve defaults
Resources.Theme theme = getContext().getTheme();
mControlColor = Color.DKGRAY;
// Text colour, default to android:colorControlNormal from theme
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
TypedValue controlColor = new TypedValue();
theme.resolveAttribute(android.R.attr.colorControlNormal, controlColor, true);
mControlColor = controlColor.resourceId > 0 ? getResources().getColor(controlColor.resourceId) :
controlColor.data;
}
mControlColor = array.getColor(R.styleable.PasscodeView_controlColor, mControlColor);
// Accent colour, default to android:colorAccent from theme
mHighlightedColor = Color.LTGRAY;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
TypedValue accentColor = new TypedValue();
theme.resolveAttribute(R.attr.colorControlHighlight, accentColor, true);
mHighlightedColor = accentColor.resourceId > 0 ? getResources().getColor(accentColor.resourceId) :
accentColor.data;
}
mHighlightedColor = array.getColor(R.styleable.PasscodeView_controlColorActivated, mHighlightedColor);
//color for the inner circle
mInnerColor = Color.CYAN;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
TypedValue innerColor = new TypedValue();
theme.resolveAttribute(android.R.attr.colorPrimary, innerColor, true);
mInnerColor = innerColor.resourceId > 0 ? getResources().getColor(innerColor.resourceId) :
innerColor.data;
}
mInnerColor = array.getColor(R.styleable.PasscodeView_digitColorFilled, mInnerColor);
//color for the inner circle border
mInnerBorderColor = Color.GREEN;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
TypedValue innerBorderColor = new TypedValue();
theme.resolveAttribute(android.R.attr.colorPrimaryDark, innerBorderColor, true);
mInnerBorderColor = innerBorderColor.resourceId > 0 ? getResources().getColor(innerBorderColor.resourceId) :
innerBorderColor.data;
}
mInnerBorderColor = array.getColor(R.styleable.PasscodeView_digitColorBorder, mInnerBorderColor);
// Recycle the typed array
array.recycle();
// Add child views
setupViews();
}
@Override
public boolean shouldDelayChildPressedState() {
return false;
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
// Measure children
for (int i = 0; i < getChildCount(); i++) {
getChildAt(i).measure(widthMeasureSpec, heightMeasureSpec);
}
// Calculate the size of the view
int width = (mDigitWidth * mDigitCount) + (mDigitSpacing * (mDigitCount - 1));
setMeasuredDimension(
width + getPaddingLeft() + getPaddingRight() + (mDigitElevation * 2),
mDigitWidth + getPaddingTop() + getPaddingBottom() + (mDigitElevation * 2));
}
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
// Position the child views
for (int i = 0; i < mDigitCount; i++) {
View child = getChildAt(i);
int left = i * mDigitWidth + (i > 0 ? i * mDigitSpacing : 0);
child.layout(
left + getPaddingLeft() + mDigitElevation,
getPaddingTop() + (mDigitElevation / 2),
left + getPaddingLeft() + mDigitElevation + mDigitWidth,
getPaddingTop() + (mDigitElevation / 2) + mDigitWidth);
}
// Add the edit text as a 1px wide view to allow it to focus
getChildAt(mDigitCount).layout(0, 0, 1, getMeasuredHeight());
}
private void setupViews() {
setWillNotDraw(false);
// Add a digit view for each digit
for (int i = 0; i < mDigitCount; i++) {
DigitView digitView = new DigitView(getContext(), i);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
digitView.setElevation(mDigitElevation);
}
addView(digitView);
}
// Add an "invisible" edit text to handle input
mEditText = new EditText(getContext());
mEditText.setBackgroundColor(getResources().getColor(android.R.color.transparent));
mEditText.setTextColor(getResources().getColor(android.R.color.transparent));
mEditText.setCursorVisible(false);
mEditText.setFilters(new InputFilter[]{new InputFilter.LengthFilter(mDigitCount)});
mEditText.setInputType(InputType.TYPE_CLASS_NUMBER);
mEditText.setKeyListener(DigitsKeyListener.getInstance("1234567890"));
mEditText.setImeOptions(EditorInfo.IME_FLAG_NO_EXTRACT_UI);
mEditText.setOnFocusChangeListener(new OnFocusChangeListener() {
@Override
public void onFocusChange(View v, boolean hasFocus) {
// Update the selected state of the views
int length = mEditText.getText().length();
updateChilViewSelectionStates(length, hasFocus);
// Make sure the cursor is at the end
mEditText.setSelection(length);
// Provide focus change events to any listener
if (mOnFocusChangeListener != null) {
mOnFocusChangeListener.onFocusChange(PasscodeView.this, hasFocus);
}
}
});
mEditText.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
@Override
public void afterTextChanged(Editable s) {
int length = s.length();
updateChilViewSelectionStates(length, mEditText.hasFocus());
if (length == mDigitCount && mPasscodeEntryListener != null) {
mPasscodeEntryListener.onPasscodeEntered(s.toString());
}
}
});
addView(mEditText);
invalidate();
}
private void updateChilViewSelectionStates(int length, boolean hasFocus) {
for (int i = 0; i < mDigitCount; i++) {
getChildAt(i).setSelected(hasFocus && i == length);
}
}
/**
* Get the {@link Editable} from the EditText
*
* @return
*/
public Editable getText() {
return mEditText.getText();
}
/**
* Set text to the EditText
*
* @param text
*/
public void setText(CharSequence text) {
if (text.length() > mDigitCount) {
text = text.subSequence(0, mDigitCount);
}
mEditText.setText(text);
invalidateChildViews();
}
/**
* Clear passcode input
*/
public void clearText() {
mEditText.setText("");
invalidateChildViews();
}
private void invalidateChildViews() {
for (int i = 0; i < mDigitCount; i++) {
getChildAt(i).invalidate();
}
}
public void setPasscodeEntryListener(PasscodeEntryListener mPasscodeEntryListener) {
this.mPasscodeEntryListener = mPasscodeEntryListener;
}
@Override
public boolean onTouchEvent(MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
requestToShowKeyboard();
return true;
}
return super.onTouchEvent(event);
}
/**
* Requests the view to be focused and the keyboard to be popped-up
*/
public void requestToShowKeyboard() {
// Make sure this view is focused
mEditText.requestFocus();
// Show keyboard
InputMethodManager inputMethodManager = (InputMethodManager) getContext()
.getSystemService(Context.INPUT_METHOD_SERVICE);
inputMethodManager.showSoftInput(mEditText, 0);
}
@Override
public OnFocusChangeListener getOnFocusChangeListener() {
return mOnFocusChangeListener;
}
@Override
public void setOnFocusChangeListener(OnFocusChangeListener l) {
mOnFocusChangeListener = l;
}
@Override
protected Parcelable onSaveInstanceState() {
Parcelable parcelable = super.onSaveInstanceState();
SavedState savedState = new SavedState(parcelable);
savedState.editTextValue = mEditText.getText().toString();
return savedState;
}
@Override
protected void onRestoreInstanceState(Parcelable state) {
SavedState savedState = (SavedState) state;
super.onRestoreInstanceState(savedState.getSuperState());
mEditText.setText(savedState.editTextValue);
mEditText.setSelection(savedState.editTextValue.length());
}
/**
* Listener that gets notified when the complete passcode has been entered
*/
public interface PasscodeEntryListener {
/**
* Called when all the digits of the passcode has been entered
*
* @param passcode - The entered passcode
*/
void onPasscodeEntered(String passcode);
}
static class SavedState extends BaseSavedState {
public static final Creator<SavedState> CREATOR =
new Creator<SavedState>() {
@Override
public SavedState createFromParcel(Parcel in) {
return new SavedState(in);
}
@Override
public SavedState[] newArray(int size) {
return new SavedState[size];
}
};
String editTextValue;
public SavedState(Parcelable superState) {
super(superState);
}
private SavedState(Parcel source) {
super(source);
editTextValue = source.readString();
}
@Override
public void writeToParcel(Parcel dest, int flags) {
super.writeToParcel(dest, flags);
dest.writeString(editTextValue);
}
}
class DigitView extends View {
private Paint mOuterPaint, mInnerPaint;
private int mPosition = 0;
public DigitView(Context context, int position) {
this(context);
mPosition = position;
}
public DigitView(Context context) {
this(context, null);
}
public DigitView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public DigitView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
init();
}
void init() {
setWillNotDraw(false);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
setLayerType(LAYER_TYPE_SOFTWARE, null);
}
mOuterPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
mOuterPaint.setAlpha(255);
mOuterPaint.setDither(true);
mOuterPaint.setStyle(Paint.Style.STROKE);
mOuterPaint.setStrokeWidth(mOuterStrokeWidth);
mOuterPaint.setStrokeCap(Paint.Cap.ROUND);
mOuterPaint.setStrokeJoin(Paint.Join.ROUND);
mOuterPaint.setShadowLayer(2, 0, 0, Color.parseColor("#B4999999"));
mInnerPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
mInnerPaint.setAlpha(255);
mInnerPaint.setStyle(Paint.Style.FILL_AND_STROKE);
mInnerPaint.setStrokeWidth(mInnerStrokeWidth);
mInnerPaint.setStrokeCap(Paint.Cap.ROUND);
mInnerPaint.setStrokeJoin(Paint.Join.ROUND);
mInnerPaint.setColor(mInnerColor);
invalidate();
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
setMeasuredDimension(mDigitWidth, mDigitWidth);
}
@Override
protected void onDraw(Canvas canvas) {
float center = getWidth() / 2;
if (isSelected()) {
mOuterPaint.setColor(mHighlightedColor);
} else {
mOuterPaint.setColor(mControlColor);
}
canvas.drawColor(Color.TRANSPARENT);
canvas.drawCircle(center, center, mDigitRadius, mOuterPaint);
if (mEditText.getText().length() > mPosition) {
canvas.drawCircle(center, center, mDigitInnerRadius, mInnerPaint);
}
}
}
现在，我想在对话框出现后立即打开数字键盘。为此，我在requestToShowKeyboard()中有一个方法PasscodeView.java来打开键盘。
但是，当对话框显示时，键盘不会打开。以下是我在onViewCreated()内编写的代码。
@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
mPasscodeView.requestToShowKeyboard();
}
这就是我在对话框片段布局中使用PasscodeView的方法：
<com.via.android.customview.PasscodeView
android:id="@+id/edtOptCode"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="@dimen/dimen_10_dp"
android:background="@null"
android:gravity="center"
android:padding="@dimen/dimen_8_dp"
passcodeView:digitColorBorder="#FFFFFF"
passcodeView:digitColorFilled="#9f9f9f"
passcodeView:digitRadius="12dp"
passcodeView:numDigits="6" />
如果有人可以帮我这个。
已解决：我的问题的解决方案已经证明如下：
@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
mPasscodeView.post(new Runnable() {
@Override
public void run() {
mPasscodeView.requestToShowKeyboard();
}
});
}
答案 0 :(得分：4)
尝试调用
，而不是在onViewCreated()中调用
mPasscodeView.post(new Runnable() {
@Override
public void run() {
mPasscodeView.requestToShowKeyboard();
}
});
所以这会将runnable添加到队列中以便在下一次传递中执行。